Carbon Nanohorn Suprastructures on a Paper Support as a Sorptive Phase

Ríos-Gómez, Julia; Fresco‐Cala, Beatriz; García-Valverde, María Teresa; Lucena, Rafael; Cárdenas, Soledad

doi:10.3390/molecules23061252

Cited by 38 publications

(11 citation statements)

References 41 publications

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“…If some nanoparticles are included in the polymer solution, they can be incorporated into the coating, providing additional characteristics [116]. Also, the dip coating has been proposed to cover paper with a pure film of carbon nanohorn suprastructures that can be used for the extraction of drugs from biological matrices [117]. The SEM micrograph of Figure 3 shows how the dahlias (the ordered aggregates of carbon nanohorns) are combined to form a homogeneous coating over the paper.…”

Section: Trends Natural Products For Simplifying the Analytical Workmentioning

confidence: 99%

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Returning to Nature for the Design of Sorptive Phases in Solid-Phase Microextraction

et al. 2019

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Green analytical chemistry principles aim to minimize the negative impact of analytical procedures in the environment, which can be considered both at close (to ensure the safety of the analysts) and global (to conserve our natural resources) levels. These principles suggest, among other guidelines, the reduction/minimization of the sample treatment and the use of renewable sources when possible. The first aspect is largely fulfilled by microextraction, which is considered to be among the greenest sample treatment techniques. The second consideration is attainable if natural products are used as raw materials for the preparation of new extraction phases. This strategy is in line with the change in our production system, which is being gradually moved from a linear model (take-make-dispose) to a circular one (including reusing and recycling as key terms). This article reviews the potential of natural products as sorbents in extraction and microextraction techniques from the synergic perspectives of two research groups working on the topic. The article covers the use of unmodified natural materials and the modified ones (although the latter has a less green character) to draw a general picture of the usefulness of the materials.Separations 2020, 7, 2 2 of 22 principle identifies one of the trends of current research in analytical sciences, it is difficult to be applied when complex samples containing the analytes at very low concentrations are processed. In such scenarios, the simplification of the sample treatment and the reduction of the sources applied (reagents, energy) can be a more practical objective, at least currently. Microextraction techniques fulfill the latter criteria [8], and they are considered among the greenest sample treatment techniques [9].Microextraction techniques have evolved in the last decade following some key trends. Among them, the development of new extraction phases can be highlighted, considering the context of this review article. In this evolution, the tenth (use of renewable resources) and eleventh (replace or remove toxic reagents) principles of GAC are especially relevant [7]. In the liquid microextraction context, environmentally friendly solvents [10,11] such as CyreneTM [12] and deep eutectic solvents [13] are clear examples of this progress.The paradigm of our production system, which up to now has been based on a linear "take-make-dispose" model, is progressively changed to a circular model [14] where reusing, repairing, refurbishing, and recycling appear as key terms. The use of surpluses of natural products as raw materials for the preparation of new sorbents is an interesting contribution of analytical chemistry for changing the production model. This review article, which combines the vision of two research groups working in the topic, tries to draw the general picture of the potential of natural products for the synthesis of new sorptive phases in solid phase extraction and solid phase microextraction. The article will cover strategies with different green characterist...

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Section: Trends Natural Products For Simplifying the Analytical Workmentioning

confidence: 99%

“…SEM images obtained for (A) a bare paper and (B) a paper modified with suprastructures of carbon nanohorns. Reprinted from[117].…”

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Returning to Nature for the Design of Sorptive Phases in Solid-Phase Microextraction

et al. 2019

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“…The latter approach is simpler and reduces the solvents/reagents required. The synthesis of functional papers by dip coating, which has been recently reviewed, 28 has allowed the preparation of papers covered with polymers, 29 − 31 nanoparticles, 32 and nanocomposites. 33 In a previous communication, 34 we proposed a photocatalytic paper, and the present article deepens the understanding of the synergic combination of sorption and photocatalysis using a relevant environmental problem, the removal of hormones from water, as a model.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Cellulose-Paper: Deepening in the Sustainable and Synergic Combination of Sorption and Photodegradation

et al. 2021

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Clean water is one of the sustainable development goals set by the United Nations for 2030. The development of effective but worldwide affordable strategies is essential to guarantee this achievement. Photocatalysis technology fulfills these criteria whenever the photocatalyst is sustainable and nontoxic. In this article, a cellulose-paper modified with a polyamide-titanium dioxide (TiO 2 ) nanocomposite by dip-coating is evaluated to degrade estrogens efficiently under solar light. The study deepens on the synergic combination of the sorptive capacity of the polyamide and the activity of TiO 2 . The photocatalytic performance was studied under artificial and sunlight in a miniaturized experimental setup (batch of six reactors). Also, the effects of the dispersed/immobilized catalyst, irradiation time, and adsorption evaluation were studied under kinetic conditions. The photocatalyst composition, considering the polyamide (nylon-6) and TiO 2 amounts and the dipping cycles, was studied by a response surface methodology, and the reusability of the photocatalytic cellulose-paper was investigated. The LED source provided removal efficiencies of 65, 62, and 52% (for estrone, 17β-estradiol, and estriol, respectively) after 420 min of light exposure. Under sunlight, the efficiency increased up to 99.5% for estrone and 17β-estradiol and 98.5% for estriol after 180 min of irradiation. The sustainable character of the cellulosic substrate, the low toxicity of the nanocomposite ingredients, and its performance under sunlight make the material attractive for in-field application.

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“…The other attempts focused on the use of polydimethylsiloxane/divinylbenzene (PDMS/DVB) and PDMS/DVB‐carbon mesh supported membranes for TFME of pesticides from aqueous samples [7]. The other extracting phase, including MOF‐199 in polystyrene [8], 1‐dodecylimidazolium [9], ZnO nanorods modified with phenyl carbamate [10], polystyrene [11], diatomaceous earth [12], aptamer coated paper [13], magnetic polybutylene terephthalate [14], silica gel thin film [15], ZnO nanoparticles (NPs) doped polyamide [16], single‐wall carbon nanohorn suprastructures [17], cork [18], hierarchical zeolitic imidazolate framework‐67 [19], Co 3 O 4 nanorod arrays [20], and porous titania [21], were also synthesized and utilized as sorbent in TFME. Current research of TFME is focused on the investigation of new coatings.…”

Section: Introductionmentioning

confidence: 99%

In‐situ formation of Zn–Al layered double oxides on electrochemically anodized nanoporous aluminum film as sorbent for chlorophenols extraction from water and wastewater followed by determination using HPLC

Ghani

Raoof

Masoum

2021

J of Separation Science

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Herein, we present a simple, cost-effective, and robust strategy for the in-situ preparation of Zn-Al layered double oxides-anodized aluminum thin film via a facile hydrothermal method, followed by calcination treatment of the Zn-Al layered double hydroxide in the air atmosphere. The in-situ prepared Zn-Al layered double oxide-anodized aluminum film was implemented as sorbent for thin film microextraction of four selected chlorophenols (4-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, and pentachlorophenol), followed by high-performance liquid chromatography-ultraviolet detection. The different variables of the thin film microextraction were screened via Plackett-Burman design and then optimized through Box-Behnken design. Under the optimum condition, the method showed good linear ranges (0.2-200 μg/L) with the coefficient of determinations higher than 0.9938. The calculated limit of detections were between 0.07 and 0.56 μg/L. Relative standard deviations of the method for determination of the analytes at 5 μg/L concentration level (n = 3) were ranged from 3.5 to 3.9% (as interday). The enrichment factors were between 39 and 58. This extraction method was demonstrated to be fast, efficient, and convenient. To study the capability of the developed method for real sample analysis, tap, well, river, and two types of wastewater samples were satisfactorily analyzed.

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Carbon Nanohorn Suprastructures on a Paper Support as a Sorptive Phase

Cited by 38 publications

References 41 publications

Returning to Nature for the Design of Sorptive Phases in Solid-Phase Microextraction

Returning to Nature for the Design of Sorptive Phases in Solid-Phase Microextraction

Photocatalytic Cellulose-Paper: Deepening in the Sustainable and Synergic Combination of Sorption and Photodegradation

In‐situ formation of Zn–Al layered double oxides on electrochemically anodized nanoporous aluminum film as sorbent for chlorophenols extraction from water and wastewater followed by determination using HPLC

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